Multicast Application; Description Multicast Application - Hirschmann MS30, Power MICE, MACH 4000, OCTOPUS User Manual

Traffic control

8.2 Multicast application

8.2.1 Description multicast application

The data distribution in the LAN distinguishes between three distribution
classes with reference to the addressed recipient:
D
Unicast - one recipient
D
Multicast - a group of recipients
D
Broadcast - every recipient that can be reached
In the case of a Multicast address, Switches pass on all the data packets with
a Multicast address to all the ports. This leads to an increased bandwidth re-
quirement.
Protocols such as GMRP and processes such as IGMP Snooping enable the
Switches to exchange information by means of the targeted distribution of
Multicast data packets. The distribution of the Multicast data packets exclu-
sively to those ports to which the recipients of these Multicast data packets
are connected, reduces the bandwith required.
You can recognize IGMP Multicast addresses by the area in which an
address is located:
D
MAC multicast address
01:00:5E:00:00:00 - 01:00:5E:FF:FF:FF
D
IP multicast address class D
224.0.0.0 - 239.255.255.255
106
8.2 Multicast application
Layer 2 Enhanced with Layer 2 Professional
Release 1.0 10/05